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美国麻省理工学院喷气推进实验室目前正在进行用单模光导纤维提高美国航空航天局深空网络稳定性的试验。该网络是“旅行者2号”等空间探测器进行通信和导航用的网络,整个网络有3套设施,每套设施有多个精确同步的可调天线。试验在14公里长光导纤维通信线路上进行。用氢微波激射器提供时间和频率标准,成功地进行了超稳定基准频率传输。传输所用光导纤维电缆是采用活动管结构的直接埋设式电缆,该电缆有G条光导纤维。
Jet Propulsion Laboratory at the Massachusetts Institute of Technology is currently experimenting with single-mode optical fiber to improve the stability of NASA’s deep space network. The network is a network for communication and navigation of space probes such as “Traveler 2”. There are three facilities throughout the network, each with multiple, precisely synchronized, adjustable antennas. The test was conducted on a 14 km long optical fiber communication line. Hydrogen microwave lasers were used to provide time and frequency standards for successful ultra-stable reference frequency transmission. The optical fiber cable used for transmission is a direct buried cable with a movable tube structure, which has G optical fibers.